GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Blazer - 4WD - RHD 🢒 Brakes 🢒 Antilock Brake System 🢒 Antilock Brake System Connector End Views
Table 1: Brake Pressure Differential Switch
Table 2: Electronic Brake Control Module (EBCM) Connector C1
Table 3: Electronic Brake Control Module (EBCM) Connector C2
Table 4: Electronic Brake Control Module (EBCM) Connector C3
Table 5: Wheel Speed Sensor (WSS) - RF
Table 6: Wheel Speed Sensor (WSS) - LF

Brake Pressure Differential Switch


Object Number: 537107 Size: CH

Connector Part Information
    • 12052646
    • 2-Way F Metri-Pack 150 Series, Sealed (WHT)

Pin

Wire Color

Circuit No.

Function

A

BLK

350

Ground

B

PPL

680

ABS Pressure Differential Sensor Signal

Electronic Brake Control Module (EBCM) Connector C1


Object Number: 666638 Size: CH

Connector Part Information
    • 12177081
    • 10-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

441

Ignition 3 Voltage

B

--

--

Not Used

C

PPL

420

TCC Brake Switch/Cruise Control Release Signal

D

--

--

Not Used

E

YEL/BLK

1827

Vehicle Speed Signal

F

--

--

Not Used

G

LT BLU

1122

ABS/TCS Class 2 Serial Data

H

PPL

680

ABS Pressure Differential Sensor Signal

J

BLK/WHT

451

Ground

K

--

--

Not Used

Electronic Brake Control Module (EBCM) Connector C2


Object Number: 779050 Size: CH

Connector Part Information
    • 12124662
    • 5-Way F Metri-Pack 150 Series, Sealed (BRN)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

830

Left Front Wheel Speed Sensor Signal

B

--

--

Not Used

C

DK GRN

872

Right Front Wheel Speed Sensor Signal

D

YEL

873

Left Front Wheel Speed Sensor Low Reference

E

TAN

833

Right Front Wheel Speed Sensor Low Reference

Electronic Brake Control Module (EBCM) Connector C3


Object Number: 684800 Size: CH

Connector Part Information
    • 12085030
    • 2-Way F Metri-Pack 630 Series, Sealed, Pull-to-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED

442

Battery Positive Voltage

B

BLK

250

Ground

Wheel Speed Sensor (WSS) - RF


Object Number: 635009 Size: CH

Connector Part Information
    • 12052641
    • 2-Way F Metri -Pack 150 Series , Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

833

Right Front Wheel Speed Sensor Low Reference

B

DK GRN

872

Right Front Wheel Speed Sensor Signal

Wheel Speed Sensor (WSS) - LF


Object Number: 635009 Size: CH

Connector Part Information
    • 12052641
    • 2-Way F Metri -Pack 150 Series , Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

830

Left Front Wheel Speed Sensor Signal

B

YEL

873

Left Front Wheel Speed Sensor Low Reference